Let's talk about monetization. 

Check out the app store and you’ll find countless of free games bombarding players with ads. In extreme cases, its hard to even get through a single level because an Ad pops up each time you tap a button. WT%^%@!! Not gonna name names, but I'm pretty sure you know which apps I’m talking about.

I chose to make the game free, as you fellow game developers would understand, it feels great having a lot of people enjoy your game. Paid games just restricts the user base, as most people wont pay for a random indie game on the app store. So here's my take:

1. Lives. Player gets 10 lives, which replenishes over time. When the player runs out of lives, you can either watch a video Ad (Unity Ad) or just wait for the in-game timer to pass to replenish your lives. Theoretically, the player doesn't even have to watch a single ad to get to level 100. 

2. In App Purchases. So donations are great, but donations with rewards are even greater! My one and only in-app purchase grants the player 999 lives. Meaning, you can die 999 times before you're prompted to watch an ad or wait for the in-game timer. All of that, just for the cost of $0.99. 

So yeah! That's the entire monetization strategy. 

Cheers, 

Ray